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Finding the Fourth Proportional to 5,161.43, 7,742.15 and 4,245.73

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Solution

The fourth proportional to 5,161.43, 7,742.15 and 4,245.73 is: 6,368.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,161.43 : 7,742.15 = 4,245.73 : x
  2. Step 2: Convert to fraction form
    5,161.43/7,742.15 = 4,245.73/x
  3. Step 3: Cross multiply
    5,161.43x = 7,742.15 × 4,245.73
  4. Step 4: Simplify right side
    5,161.43x = 32,871,039.81
  5. Step 5: Solve for x
    x = 32,871,039.81/5,161.43
  6. Step 6: Final answer
    x = 6,368.59

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.